释义 |
power When a real number a is raised to the index p to give ap, the result is a power of a, and p is often referred to as the power. The same index notation is used in other contexts, for example to give a power Ap of a square matrix (see power (of a matrix)) or a power gp of an element g in a multiplicative group. For details of how general powers of positive numbers are rigorously defined, see index.
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